Compilare: user.cpp: In function ‘void interclas(Point*, int, int, int)’: user.cpp:41:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (size_t i = 0; i < k; i++) ^ user.cpp: In function ‘llong closestDistance(int, int, Point*, Point&, Point&)’: user.cpp:78:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (size_t i = 0; i < dr; i++) ^ user.cpp:80:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (size_t j = i+1; j <= dr; j++) ^ user.cpp:112:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (size_t i = st; i <= dr; i++) ^